[PostGIS] #5981: Retire dronie

[PostGIS]

#5981: Retire dronie
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 Reporter:  strk          |      Owner:  robe
     Type:  task          |     Status:  new
 Priority:  medium        |  Milestone:  Website Management, Bots
Component:  QA/buildbots  |    Version:
 Keywords:                |
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 We don't need 2 different CI solutions from OSGeo, let's only use Woodie
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5981>
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